noun
- A greenish mineral composed of hydrous silicate of potassium, iron, and aluminum, commonly found in marine sedimentary rocks.
Usage: geology; mineralogy
Examples
- Glauconite deposits are often found in shallow marine environments.
- The geologist identified glauconite grains in the sandstone sample.
- Glauconite gives the sediment its characteristic green color.
- This formation contains significant amounts of glauconite, indicating ancient seabed conditions.
- Glauconite is used as a potassium fertilizer in agriculture.